Teens are tethered to technology like never before. Almost all have smartphones; many are online constantly. Those are top-line findings from a new survey of American teens by the Pew Research Center. This news is no rocketing revelation to those who know and love “iGen,” the name coined by social psychologist Jean Twenge for the smartphone generation, born after 1995. The parent of iGen-ers, I wasn’t surprised by Pew’s findings. Yet culture is capricious: Trends show teens hurtling toward total tech immersion, but other signs show a backlash is building. What do teens say?